剑指 Offer II 041 滑动窗口的平均值
2022-07-28
1分钟阅读时长
剑指 Offer II 041 滑动窗口的平均值
给定一个整数数据流和一个窗口大小,根据该滑动窗口的大小,计算滑动窗口里所有数字的平均值。
实现 MovingAverage
类:
MovingAverage(int size)
用窗口大小size
初始化对象。double next(int val)
成员函数next
每次调用的时候都会往滑动窗口增加一个整数,请计算并返回数据流中最后size
个值的移动平均值,即滑动窗口里所有数字的平均值。
示例:
输入: inputs = ["MovingAverage", "next", "next", "next", "next"] inputs = [[3], [1], [10], [3], [5]] 输出: [null, 1.0, 5.5, 4.66667, 6.0] 解释: MovingAverage movingAverage = new MovingAverage(3); movingAverage.next(1); // 返回 1.0 = 1 / 1 movingAverage.next(10); // 返回 5.5 = (1 + 10) / 2 movingAverage.next(3); // 返回 4.66667 = (1 + 10 + 3) / 3 movingAverage.next(5); // 返回 6.0 = (10 + 3 + 5) / 3
提示:
1 <= size <= 1000
-105 <= val <= 105
- 最多调用
next
方法104
次
注意:本题与主站 346 题相同: https://leetcode-cn.com/problems/moving-average-from-data-stream/
type MovingAverage struct {
}
/** Initialize your data structure here. */
func Constructor(size int) MovingAverage {
}
func (this *MovingAverage) Next(val int) float64 {
}
/**
* Your MovingAverage object will be instantiated and called as such:
* obj := Constructor(size);
* param_1 := obj.Next(val);
*/